/Engine/Plugins/Enterprise/DataprepEditor/Source/DataprepEditorScriptingUtilities/Public/EditorDataprepAssetLibrary.h
the action is added at the end of the action list
the new action
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Editor Scripting | Dataprep Asset | Actions") static [UDataprepActionAsset](API\Plugins\DataprepCore\UDataprepActionAsset_1) * AddActionByDuplication ( [UDataprepAsset](API\Plugins\DataprepCore\UDataprepAsset) * DataprepAsset, [UDataprepActionAsset](API\Plugins\DataprepCore\UDataprepActionAsset_1) * ActionToDuplicate )